1. n. An alternative browser based on MozillaFireFox, created with similar ideals as Gnuzilla. The reason it was created was because the fucks who created Debian didn't like Mozilla's shitty Public License, which releases only the source code, not the branding, under the GPL.

Possum: So, did you get the new FireFox?
Dylan: What are you smoking?! It's called IceWeasel now, n00b! What version of Debian do you think you're using?!